报告人简介：

王瑞东，天津理工大学教授，博士生导师，入选天津市131人才计划，主要从事泛函分析空间理论研究，主持完成国家自然科学基金2项，现正在主持国家自然科学基金1项，天津市自然基金1项。

报告简介：

Tingley’s problem, a classical question in functional analysis, asks whether every surjective isometry between the unit spheres of two normed spaces admits a unique linear or affine isometric extension to the whole space. This report focuses on the status of Tingley’s problem within several classical sequence spaces, including combinatorial Tsirelson spaces, Schreier spaces, and so on.